Adventure Comics 1938 #315 - reader copy - $4.00

The Legion of Super-Heroes finds out about the Subs and hold a contest to induct the winner into the Legion of Super-Heroes.

The public library can take its patrons on journeys around the world and beyond, as shown by the captain after telling the boys some tales.

Stone Boy wins the contest, but decides to stay with the Subs.

Red K makes Superboy giant-size.

On-sale date from copyright registration. Published monthly by National Periodical Publications, Inc., 2nd and Dickey Streets, Sparta, Ill. (the address of Spartan Printing Company, the printer, and a subsidiary of World Color Press). Editorial, executive offices and subscriptions, 575 Lexington Avenue, New York 22, N.Y.

• Treasure Chest of Fun - Inside front cover. An advertisement for Honor House Prod. Corp. of Lynbrook, N.Y.
• Part I: The Legionnaire's Super-Contest! - Indicia at bottom of page one. Bouncing Boy misidentified as Bouncing Girl in Roll Call.
• Your Free Trip Around the World! - A list by Lionel English also gives the penciller and inker as "Morris Waldinger" in one of the issues this PSA appears in. Creator credits from a list by Lionel English.
• What's Your Superboy I.Q.? - Promotional house advertisement for Superboy subscriptions.
• - Letters from: Ed Rolfe, Ken Clarke, Dexter LaCrosse, E. Nelson Bridwell, Gracie Culwell, and Ken Lowe. Bridwell later became a comic book creator.
• The Titanic Boy of Steel! - The last new Superboy story in Adventure Comics during the Legion's run.
• - DC subscription offer page.
• - Inside back cover.
• Fly-Over Chicane - Back cover.